The Parsing Expression Grammar Template Library (PEGTL) is a C++0x library for creating parsers according to a Parsing Expression Grammar (PEG). Grammars are embedded as regular C++ code, created with template programming (not template meta programming). These hierarchies naturally correspond to the inductive definition of PEGs. The library extends on the subject of PEGs with new expression types, actions that can be attached to grammar rules, and mechanisms to ensure helpful diagnostics in case of parsing errors. PEGs are superficially similar to Context-Free Grammars (CFGs).
runawk is a small wrapper for the AWK interpreter that helps one write standalone AWK scripts. Its main feature is to provide a module/library system for AWK which is somewhat similar to Perl's "use" command. It also allows one to select a preferred AWK interpreter and to set up the environment for AWK scripts. Dozens of ready for use [modules].awk are also provided.
Squirrel is a light-weight programming language (around 6000 lines of code) that features higher-order functions, classes/inheritance, delegation, tail recursion, generators, cooperative threads, exception handling, reference counting and garbage collection on demand. It has a C-like syntax.
xplain2sql converts files from Xplain to SQL. It supports a very large subset of Xplain, and it can convert from Xplain to Microsoft SQL Server, DB/2, Inprise InterBase, PostgreSQL, Oracle, MySQL 5, SQLite 3 or ANSI-92 SQL. It can also generate an XML description of the generated SQL. This XML description can be used to create low-level middle-tier code. Example stylesheets for Eiffel/ECLI and Delphi/ADO are included. The C source code release should compile on any platform with an ANSI C compiler. There are binary releases for FreeBSD, Linux, Solaris x86, and Windows 2000.
Thread Safe Template Library (TSTL) is a C++ library that provides thread-safe containers with high grade of locking. It includes classes for multimaps based on a B-tree and a hash table. It also includes classes for a queue, a priority queue, a pipe, an alloccache, a timercache, a limitcache without global locking, and a fast shared mutual exclusion locker (also known as "rwlock" or "wmrg"). It's useful for writing multi-threaded applications, network services, and operating system components with high requirements for interactivity level.
mimetic is a MIME library written in C++ designed to be easy to use and integrate but yet fast and efficient. It's standard compliant using the Standard Template Library for base C++ structures and supporting all relevant messaging RFCs. A powerful template encoding/decoding engine is also included to allow seamless extendibility (i.e. encryption codecs) and intuitive codec chains creation (using well-known Unix-style pipes syntax: a|b|c). Real world examples, documentation, and regression tests are included.
miniDB is a small and fast isam/btree library/program for record based access, used as standalone or as client/server. It features a small footprint, multi-field indexes, autoincrement fields, and database logging. All data is kept in a pure ASCII file, so you can also use grep and awk on it.